Process of making folding articles.



0. L. HEMMING.

PROCESS OF MAKING FOLDING ARTICLES.

APPLICATION FILED NOV-B12917.

1,280,462. Patented Oct. 1, 1918.

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Be it known that I, Or'ro L. HEMMING,

a. citizen of the United States, residing at New Haven, in the county of New Haven andState of Connecticut, have invented a certain Process of Making Folding Articles, ofwhich the following is a specification, reference being had therein to the accompanying drawings;

My inventionIhas relation .to thejmanufacture of folding articles, such as knives, buttonhooks, cork screws, and the like.

The object of my invention, among other things, is toprovide a durable and efficient article that is composed of a minimum number of parts and produced by my improved process of manufacture, which consists firstly in making the handle portion of the article of one piece of sheet metal, secondly, insertin a fixed anchoring post within the handle or a spring which controls the opening and closing movements of the folding member of the article, and thirdly, finishing said handle portion, all of which mentioned operations are effected previously to the complete assembling of all of the parts.

The invention will be hereinafter de scribed with reference to theaccompanying drawings, wherein,

Figure 1 is a composite view showing the principal elements of a folding knife disassembled, the blank for the handle being illustrated as it appears after the blanking operation.

Fig. 2 is a view of the handle blank after the first operation thereon;

Fig. 3 is a sectional View thereof taken upon line 33 of Fig. 2;

Fig. 4: is a view of the handle blank after the second operation thereon;

Fig. 5 'is a sectional view thereof taken upon line 55 of Fig. 4;

Fig. 6 is a view showing the handle completed;

Fig. 7 is an edgewise view of the front of the handle as shown in its completed form in Fig. 6; and

Figs. 8 and 9 are respectively cross sectional and longitudinal sectional views showing the assembled knife, the sections being taken respectively upon lines 8-8 and 9-9 of Figs. 9 and 8.

In carrying out the embodiment of the invention as illustrated in said drawings, the process is employed in constructing a novel form of knife handle, which together same in open and rnocrss or Maxine rename ARTICLES.

Specification of Letters Patent. Patgnteql Get, 1, 19115,, -App1ic'atio1i filed November 8, 1917. Serial N 0. 200,921.

with therconstruction and arrangement of the blade and the spring for maintaining the closed positions forms the subject matter of another application.

The handle of the knife, designated by the numeral 1, is composed of a single piece of sheet metal shaped and bent to form a pocket 2 for the knife blade when the latter is in aclosed position. Conve'xed or outwardlyswelling sides 3 offer a convenient grip for the user, and the end 4 is flattened to receive and hold the shank 5 of the blade 6 against lateral or side play. Spring 7 employed for controlling the opening and 'closing movement of the blade, engages the shoulder 8 of the blade when open, and the square end 9 is engaged by said spring when the blade is in intermediate and closed positions. The blade 6 is pivotally mounted upon a rivet l0, and the spring 7 is held in place by engagement of the shouldered or hooked end 12 with the rivet or post 13 located between the ends of the handle substantially as shown.

From the foregoing description of the parts of the knife, it will be noted that the complete knife is composed of three parts or pieces only, namely the handle 1, spring 7 and blade 5, and in assembling such parts only the two rivets 10 and 13 are required.

In the process of making the handle, a blank 14, having a configuration substantially as shown in Fig. 1, is cut from a flat piece of metal, and at the cutting operation may be slightly bulged or swelled, as shown at 15.

The second operation consists in increasing the depth of the bulge or swelling 15,

punching holes 16 and 17 respectively for the rivets 10 and 13, which are used in as sembling the parts of the knife. In this operation the notched and rounded end 18 of the blank is turned over to form the end lips 19.

In the next operation the blank is folded so as to bring the two sides together, as shown in Figs. 4, 5 and 6. The rivet 13 is next inserted and fastened in place by upsetting the ends thereof, after which the handle is finished by plating, japanning, polishing or by other means.

The above operations conclude the process of making the handle, which, it will be noted, is completely finished, before the assembling therewith of the other parts.

In assembling, the first step is to insert that the shouldered or hooked end 12 en-v gages rivet 13 andthen'theliladeandrivet 10 are inserted, the lattenrivet being pref erably upset by spinning so as not to near the finish of the handle.

claim as new and desire to secure :by :Let ters Patent, is,-

1:. the "manufacture "of articles 'voflithe elasadescribed, [a method' o'f making :the hand-1e portion-of the article of a one piece sheet metal; flolank consisting in formringsubstantially parallel depressions .lo'r igiitudinallgy iin the blank 'leaving aepontion of the bla'n-k at-o'ne' end flat, perfonating :said

blank in each 'depressionsubstantially at a central point and at-eachside of theufiat portion of the blank and Fisnbsequently lbend ling-said blank along the :longitudinalcenter .thereof so as-ito provide an .open pocket -class described, agmethod of makin between said flat end portion and said depressions. v a

' 2'. In the inanlifac'tnre of articles of the the handle portion of the article and providing e meansfor anchoring a controlling -spring -Havmg *descri'bed my invention, What I therein, consisting in makingthdhiiidle rp'ontion :a name piece sheet metal blank having depressions formed longitudinally therein leaving a sportion- 10f the blank 11 at .onewend fiat, ztipffglatlflll formed in each :depressien substantially at 1a icentral point, hendiing "said blank sangthe longitudinal eenterathereof so :as' to provide 2131130 13811 ,pn'cket wb'etmeen sai'd flat rend portion and the depressions, amid-subsequently is'ecuring a"controlllhigxspringianchoring apost' inisaid perforations Within the handle iportion.

'Imrtestimony "whereof I have hereunto afliiied signature. V V

floliies 61 this patentmwy hembtainetl forfivewcents eaehyifiy afddressiligmhb 'c'oihinissioner of Patents,

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